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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
9 9 1
6 5 2 ×
2 × 1 =
2
2 × 90 =
180
2 × 900 =
1800
50 × 1 =
50
50 × 90 =
4500
50 × 900 =
45000
600 × 1 =
600
600 × 90 =
54000
600 × 900 =
+ 540000
646132